/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/AssetUtils/Texture2DBuilder.h
Set the texel at the given X/Y coordinates to the givenFFloat16Color
void SetTexel ( const [FVector2i](API\Runtime\GeometryCore\FVector2i) & ImageCoords, const [FFloat16Color](API\Runtime\Core\Math\FFloat16Color) & NewValue )